问题 单项选择题

关于感染性休克的休克发展期(淤血缺氧期),下列哪项不正确

A.无氧代射酸性产物(乳酸)增加

B.肥大细胞释放组胺增加

C.缓激肽形成增多

D.自由基生成减少

E.毛细血管流体静脉压增高,导致通透性增加,血浆外渗

答案

参考答案:D

解析:休克发展期(淤血缺氧期):微循环血液灌注减少,组织缺血缺氧,无氧代谢酸性产物(乳酸)增加,肥大细胞组胺释放、缓激肽形成增多,致微动脉对儿茶酚胺的敏感性降低而舒张,毛细血管开放,而微静脉端仍持续收缩,微循环内血液淤滞,毛细血管流体静压增高,其通透性增加,血浆外渗,造成组织水肿,血液浓缩,有效循环血量减少,回心血量进一步降低,血压明显下降,缺氧和酸巾毒更显著,氧自由基生成增多,通过脂质过氧化而损伤细胞。

选择题
完形填空

第Ⅱ卷(共35分)
第四部分:写作部分(共2节)
第一节 对话填空。阅读下面对话,掌握其大意,并根据所给首字母的提示,在标有题号的右边横线上写出一个英语单词的完整、正确形式,使对话通顺。
W: What do you hope to do after graduating?
M: I’d like to go into management. I’ve (76)a_______ for several jobs
already. How about you?
W: After I finish (77)u_______, I have to do some more studies to pass
exams to become a lawyer. I think I’ve got a good chance of passing.
There’s a possibility of (78)g_______ a job with a firm in London,
provided that I do well.
M: We both have to (79)o_______ many difficulties if we are to achieve
our ambitions.
W: If life were easy, then we would achieve our ambition (80)q_______
and then get bored.
M: Unfortunately, some people are going to(81)w_______ hard yet not succeed.
W: You can’t achieve something that’s totally unrealistic.
That’s (82)w_______ ambition needs to be realistic.
M: As long as you plan carefully, most things are possible. It’s always
good to have a backup plan in (83)c       things go wrong.
W: I think it’s important to be successful in a field you are truly
(84)i_______ in, not something that other people force you to do.
M: My father wanted me to become a doctor, but I knew it would be
impossible for me.
W: I hope my (85)p_______ don’t try to interfere in my choice of career.
 
(76) ___________
(77) ___________
(78) ___________
(79) ___________
(80) ___________
(81) ___________
(82) ___________
(83) ___________
(84) ___________
(85) ___________